The rising tide behind the school turnaround movement is significant, as national education leaders continue to call for the rapid improvement of the nation's lowest-performing schools. To date, little work has been done to identify schools that are drastically improving their performance. Using publically available school-level student achievement data from Minnesota, we begin to detail the statistical and practical steps necessary to identify schools rapidly improving their performance. (Contains 3 tables, 3 figures and 15 footnotes.)